Head and Neck Quiz 1

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Questions and Answers

Which cranial nerve is responsible for facial movement?

Cranial Nerve 7 (correct)

Cranial Nerve 5

Cranial Nerve 12

Cranial Nerve 9

Which muscle is responsible for raising the eyebrows?

Bunny Lines

Orbicularis Oculi

Frontalis Muscle (correct)

Glabellar Frown Lines

Which muscle is responsible for frowning?

Nasalis

Orbicularis Oculi

Levator Labii Superioris Alequae Nasi

Frontalis Muscle (correct)

Which muscle is responsible for closing the eyelids?

Orbicularis Oculi Signup and view all the answers

Which muscle is responsible for wrinkles on the sides of the nose?

Nasalis Signup and view all the answers

Which muscle is responsible for smiling excessively?

Levator Labii Superioris Alequae Nasi Signup and view all the answers

Which muscle is responsible for wrinkles around the mouth?

Depressor Anguli Oris Signup and view all the answers

Which muscle is responsible for producing wrinkles or frown lines on the forehead?

Frontalis Signup and view all the answers

Which is produced by the static pull of facial muscles on the skin?

Rhytids Signup and view all the answers

Which muscle is responsible for causing the skin around the eyes to fold and producing 'crow's feet'?

Orbicularis oculi Signup and view all the answers

What is the main function of BOTOX?

To prevent the release of acetylcholine at the neuromuscular junction Signup and view all the answers

Which cranial nerve innervates the facial muscles?

Cranial nerve 7 Signup and view all the answers

What is the purpose of injecting BOTOX at the lateral side of the orbicularis oculi muscle?

To prevent the formation of 'crow's feet' Signup and view all the answers

What are the two mechanisms of action for wrinkles?

Thinning of the skin and dynamic pull of facial muscles Signup and view all the answers

Which muscle is responsible for opening the jaw?

Lateral Pterygoid Signup and view all the answers

Which muscle inserts into the mandible and controls the jaw?

Masseter Signup and view all the answers

What is the net action of the muscles of mastication?

To close the jaw Signup and view all the answers

Which gland produces the majority of stimulated saliva?

Parotid gland Signup and view all the answers

Where are the parotid glands located?

Pre-auricular area Signup and view all the answers

Which duct carries saliva from the parotid glands into the mouth?

Stensen's Duct Signup and view all the answers

Which gland produces the majority of unstimulated saliva?

Submandibular gland Signup and view all the answers

Where is Wharton's duct located?

Below the floor of the mouth Signup and view all the answers

What viral infection primarily affects the parotid glands?

Mumps Signup and view all the answers

Which muscle is responsible for producing wrinkles around the mouth?

Orbicularis Oris Signup and view all the answers

What is the main cause of bunny lines on the nose?

Both A and B Signup and view all the answers

In cleft lip babies, what is the deformity of the Orbicularis Oris muscle?

It is not continuous with each other Signup and view all the answers

What muscle is responsible for a gummy smile?

Levator Labii Superioris Alequae Nasi Signup and view all the answers

Which muscle pulls the skin downward and forward, producing marionette's lines?

Depressor Anguli Oris Signup and view all the answers

What muscle causes turkey gobbler neck?

Platysma Signup and view all the answers

Which muscles are responsible for closing the jaw?

Masseter, Temporalis, Medial Pterygoid Signup and view all the answers

Study Notes

Cranial Nerves and Facial Muscles

The cranial nerve responsible for facial movement is the seventh cranial nerve, also known as the facial nerve.
The muscle responsible for raising the eyebrows is the frontalis muscle.
The muscle responsible for frowning is the procerus muscle.
The muscle responsible for closing the eyelids is the orbicularis oculi muscle.
The muscle responsible for wrinkles on the sides of the nose is the nasalis muscle.
The muscle responsible for smiling excessively is the zygomaticus major muscle.
The muscle responsible for wrinkles around the mouth is the orbicularis oris muscle.
The muscle responsible for producing wrinkles or frown lines on the forehead is the frontalis muscle.

BOTOX and Facial Muscles

The static pull of facial muscles on the skin produces wrinkles.
BOTOX is used to relax facial muscles, reducing wrinkles and facial lines.
The cranial nerve that innervates the facial muscles is the seventh cranial nerve.
Injecting BOTOX at the lateral side of the orbicularis oculi muscle helps to reduce crow's feet.

Mechanisms of Action for Wrinkles

The two mechanisms of action for wrinkles are dynamic wrinkles (from muscle movement) and static wrinkles (from skin elasticity loss).

Muscles of Mastication

The muscle responsible for opening the jaw is the lateral pterygoid muscle.
The muscle that inserts into the mandible and controls the jaw is the masseter muscle.
The net action of the muscles of mastication is to facilitate chewing and jaw movement.

Salivary Glands

The parotid glands produce the majority of stimulated saliva.
The parotid glands are located in front of the ears.
The Stensen's duct carries saliva from the parotid glands into the mouth.
The submandibular glands produce the majority of unstimulated saliva.
Wharton's duct is located in the submandibular glands.
The viral infection that primarily affects the parotid glands is mumps.

Other Facial Muscles

The orbicularis oris muscle is responsible for producing wrinkles around the mouth.
The main cause of bunny lines on the nose is the contraction of the nasalis muscle.
In cleft lip babies, the deformity of the Orbicularis Oris muscle is commonly observed.
The levator labii superioris muscle is responsible for a gummy smile.
The platysma muscle pulls the skin downward and forward, producing marionette's lines.
The platysma muscle causes turkey gobbler neck.
The muscles responsible for closing the jaw are the masseter and temporalis muscles.

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Description

Test your knowledge on wrinkles around the mouth and the muscle responsible for their formation. Learn about the orbicularis oris muscle and its role in producing circular creases. Discover how botox can be used strategically to maintain control while reducing wrinkles.